*{margin: 0;text-align: center;}
#timer-container {
  padding: 30px;
}
#switch-button {
  text-shadow: 0 -1px 0 rgba(0,0,0,0.12);
  box-shadow: 0 2px 0 rgba(0,0,0,0.045);
  outline: none;
  margin-top: -10px;
  display: inline-block;
  height: 30px;
  padding: 0 7px;
  font-size: 12px;
  font-family: Avenir,-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Helvetica Neue',Helvetica,Arial,sans-serif,'Apple Color Emoji','Segoe UI Emoji','Segoe UI Symbol',sans-serif;
  line-height: 30px;
  text-align: center;
  text-decoration: none;
  border: 1px solid #F44336;
  border-radius: 6px;
  background: #F44336;
  color: #FFF;
}
